A 25-YEAR-OLD ‘grid girl’ from Cronulla has joined a select group of women — which includes Paris Hilton, Kate Upton and Ronda Rousey — to become the newest bikini-clad star of a Carl’s Jr burger commercial.

The controversial American burger chain opened its first Australian store on the NSW Central Coast today.

The restaurant is famous for its hyper sexualised ads starring blonde, busty women eating burgers, usually while wearing bikinis.